#include<time.h>
#include<stdio.h>

int main( void )
{
	time_t start, end;
	double t;

	start = time(NULL);
	for( t = 0; t < 750000000; t++ ) ;
	end = time(NULL);
	printf("O laco usou %f segundos!\n", difftime(end, start));

	return 0;
}
